So the pirates loaded all the treasure into Willy's tail, and started to carry it down to the shore. It was only when they reached the water that they realised that the water wasn't shallow any more. In fact it was far too deep to walk through.
But luckily Tom had been watching, and very soon he was there with the dinghy, just in time to pick up the floundering pirates before they, and the tail full of treasure, sank.
The Captain boasted loudly as they towed Willy and the treasure back towards the Black Pig.
"Kipper me capstans!" he said. "If that wasn't the cleverest plan ever!"
"Hmm, Yes," thought Tom. "It was quite a good scheme for once, only I did try to tell him they'd be out of their depth when the tide came up."